Self-oiling pulley



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w. ;m 1, l, 2% w a., M v z w 1 Patented Feb. 15, 1927.

UNITED sTA'rs PATENT OFFICE.

WALTER nDwAnDs, or' 'ranna mmm,- mnmim, n'sszemn;l or roncrY-NINE racEN'r 'ro WILLIAM B. nmuoNDs, or' 'ranna HAUTE, INDIANA.

SELF-OILING PULLEY.

My present invention relates generally to pulleys, trolley Wheels, andother journaled rotating elements of this character, and moreparticularly to self oiling arrangeb ments therefor, my object being theprovision of a simple inexpensive construction which will be effectiveand eflicient in'use for the purposes for which it is provided, andwhich utilizes al construction of a strong, durable character.

In the accompanying drawing which illustrates my invention and formspart of this specificatiomw Figure 1 is a sectional view takendiametrically through my invention, showing its practical application inconnectlonwith a trolley wheel.

Figure 2 is a median section taken sub-`` stantially on line 2-2 of Fig.1, and,

Figure 3 is a side view thereof.

Referring now to these' figures, inventionV proposes an arrangement v1nconi w I carrymg out of my 1nvent1on is both strong nection with atrolle wheel pulley and the like having a centra hub portion '10"Journaled upon a shaft and the like 11, and provided centrally thereofwith an annular groove 12, around the shaft with which the inner ends ofa communicate.

The pulley or wheel is further. formed with an outer flange 13 and hasbetween its hub 10 and its flange 13 an enlarged oil chamber 14, definedby a'rigid side wall 15, and a removable side wall 16, the latterpreferably secured in place by machine screws 17 and confined inconnection with askets adapted to prevent leakage of 'oil rom thechamber 14.

The .rigid wall 15 is preferably provided with'an opening for therefilemshment of oil Vwithin the chamber 14, t e opening being normallyclosed by a screw closure 18, 'and the chamber 14 is preferably entirelyopen to the inner ends of the diametrical openings of the hub 10 andopen to the outer ends ofa pair of rigid feed tubes 19,'whose inner endsare threaded into the diametricall Thus with oil in the chamber 'z 14, acertain proportion of this oil which m the pair of diametrical openings'radially into the chamber 14 and' the hub around the shaft 11'issuflicient in practice to keep the journal of the wheel times.

This ,arrangeme'nt is especially vuseful in connection with trolleyWheels and otherrotatingA members, which 'in practice `are subjected tofrequent stops,'although it is tov be understood that while illustratingm invention inconn'ection with a trolley whee it is not to be limited`to such use, but may be eifectively and eflicientl Aemployed in'connection with pulle s, an in fact all ro.- tating elements of t is.general Character havingjourn'als upon supporting shafts.

' The construction as 1 outlined forv the and durable, and-yetthe'device as awhole is .of a very economical nature, but little moreexpensive than the 'ordinary wheel, while its use is o'bviously the'means of saving a great deal ofjwear and tear in opera-i tion and thelosses due to delays ordinarily 'required' by the repair andsubstitution of the rapidly wearing machine elements of this t pe.. w

In an automatically oiled 'pulley, an integral rim side walland bearingportion,

'said rim-being formed with an inner convexed side', `apertures in saidbearing portion, az. portion having a circumferential groove disposedadjacent the apertures in said lbearing 'portion, tubular membersmounted in said apertures in the bearing portions. of the pulley havingtheir ends open' opposite to the openings in said bearing portionandclosely adjacent to the -inner convexed side of the rim of thepulley,

whereby the amount of oil passing into said tubular members is limitedby the space'between the ends of thetubular members and the innerlconvexedside of the pulle rim and a second detachable side plate a aptedto engage the side of the pulley rim and the` bearing portion of thepulley to. form an oil reservoir within the ulle WAL ER DWARDS.

in a thoroughly lubricated conditonat all.

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